cnn's john king breaks down the numbers for us. >> so that's a narrow ohio lead for the president, but there's yet another poll showing the president holding on to a small, but persistent lead in ohio. let's take a closer look at just why it's happening. one reason is this. the president gets most democrats. governor romney gets most republicans. the president at the moment has a narrow lead, but a significant lead among independents. there's also an age gap, if you will. if you want to look at the vote in ohio, likely voters in our poll, those under 50, a big 18-point advantage for the obama-biden ticket over romney-ryan. this encouraging to the republicans, their leading among older voters, but they need the margin. governor romney would need that margin to be a little bit bigger than six points to expect to carry the margin. ohio, the auto bailout tends to help the president do better among white, working class voters. among white men, the president is over 40%. you might say well, he's getting beat. if the president is over 40% among white men in an central state like ohio, he's li